Insulator supporting post



C. P. SEYLER June 2, 1931.

INSULATOR SUPPORTING POST Filed Feb. 16, 1927 2 Sheets-Sheet l June 2, 1931. c. P. SEYLER INSULATOR SUPPORTING POST Filed Feb. 16, 1927 2 Sheets-Sheet 2 Patented June 2, 1931 PATENT OFFICE CARL P. SEYLER, F PITTSBURGH, YENNSYLVANIA INSULATOR SUPPORTING POST Application filed February 16, 1927. Serial No. 168,617.

The invention has in view to provide means for supporting and fixedly holding an insulator on the terminal of a post, arm, or other similar supporting device. It consists '6 of such a post or arm having on its outer end a resilient thread-engaging arbor, fixedly connected with the post and having external threads for engagement by the insulator, with means providing sufficient resiliency to effect 1 tightening when the insulator is screwed upon the arbor, together with certain other features of construction and improvement as hereinafter described.

In the drawings, showing certain preferred embodiments of the invention:

Fig. 1 is a sectional view showing my improved support and an insulator carried thereby;

Fig. 2 is a partial view in elevation of the 29 upper end of the post and its resilient threaded. terminal Figs. 3 and 1 are perspective views, showing the two halves of the resilient mounting, before attachment to the post;

Fig. 5 is a cross-section on the line VV of Fig. 2;

Fig. 6 is a View of the upper end of the post before the screw attachments are applied thereto;

0 Fig. 7 is a plan view of the outer end of the post;

' Fig. 8 is a sectional view, showing a modified construction of arbor, with a separate resistance terminal piece;

i Fig. 9 is a plan view of Fig. 8;

Fig. 10 is a detail view of the resistance terminal piece;

Fig. 11 is a view in elevation similar to Fig.

2, showing a further modified constructionmade of a continuous one-piece blank; and

Fig. 12 is a plan view of Fig. 11. Referring to the construction shown in Figs. 1 to 7 inclusive, the supporting post or arm 2, preferably made of a orging or steel casting, is adapted to be mounted by its flared base 3 on any suitable supporting carrier, as an angle member 4, and tightened thereon by one or more nuts 5, engaging a central threaded stem 6.

1 At its upper end, the post 2 is annularly reduced, as at 7, between a lower shoulder 8 and an upper collar 9, providing clearance for inward compression of the threaded sheet metal arbor members 10-10.

These members, as shown in Figs. 3 and 4, 56 are made in halves, having lower securing semi-circular shell or base portions 11 and upper threaded portions 12. These members are easily made from suitable blanks by pressing in dies to form the semi-circular 60 threads and attaching portions.

The threaded portion is somewhat larger in diameter than the shell portion and tapers slightly from its base to the top, so that, when placed together around the lower por- 85 tion of the reduced shank 7, the threaded extensions embrace the shank with intervening clearance, and bear against or lie adjacent tothe terminal collar 9.

Lower semi-circular shell ortions 11 are welded to the lower portion of reduced shank 7, and to each other, by the usual electric welding operation, or by soldering, as indicated at 13. If desired, the connection may be also made by one or more rivets 14-, and either or both of such connecting means may be utilized.

When thus placed together, the two semicircular shell portions 12 are slightly spaced apart, between their adjacent edges as at 15, so and with their upper terminals in approximate bearing relation to the collar 9.

As thus mounted, the threaded arbor is in position for receiving the insulator 16, of any suitable construction and having the usual interior threads for screwing thereon. As the insulator is advanced over the threads, it tends to bind the arbor members which are sufficiently resilient to be pressed together, between their lower and upper terminals, so as to effect tight binding engagement with the insulator, and to hold itpermanently in position against loosening.

The upper end of the post 2, above collar 9, is also preferably provided with an out- 9 wardly extending button or ridge 17 against which the inner end of the insulator may come into contact, to limit further movement, so as to avoid breakage under undue strain. Such bearing also tends to act in the nature M! of a nut lock, loosen. V

In Fig. 8, I show a slightly modified construction in which the two semi-circular base portions 11a are fitted around the reduced portion 7 of the post 2 and welded together and thereto in the manner described. The side portions 12a embodying the thread members extend upwardly beyond such attach ment or connection, with the intervening clearance space 15a, and are rounded over the upper edge of the terminal 9a of the stena, Such terminal, however, is left plane across its top, and for the purpose of providing a limiting stop for the insulator, I insert underneath and between the oppositely inwardly turned lip terminals 10a of each side member, the resisting terminal piece 17a.

preventing any tendency to Such piece is made of a pressed blank of sheet metal in the form shown in Fig. 10', fitting freely between the resilient ends of the threaded members and extending upwardly therebeyon'd for contact with the inner middle portion 6f the insulator, in the same manner as shown in Fig. 1.

In Figs. 11 and 12, I show a further modified construction in which the attaching base or shell portions 112) are welded around the reduced base portion of stem 7 of post 2, as clearly shown. The side threaded members 126 tapering toward the end and spaced outwardly from the supporting stem, are separated by the clearance slot 15?), and are joined at the top by the connecting integral upwardly extending bridge member 17]). Such member, as shown, projects beyond the end of the threaded portion, providing the insulatorarresting abutment with resulting bindin on the threads in the same eneral manner as already described. The construction I and operation of the device will be readily understood and appreciated by all those familiar with the general class of insulator supports. It is extremely cheap, serviceable and efficient in construction and use, and when protected by the insulator, is not subject to rust or weather deterioration.

It will be understood that the invention may be utilized in connection with any suitable design of support, and also may be erected in a vertical or any other desired position. It may be changed or Varied by the skilled mechanic in size, design, or other details, and all such changes are to be understood as within the scope of the following claims.

What I claim is:

1 In combination with a supporting arm having an outer enlarged circular terminal collar, an insulator support having a thread ed sheet metal arborconsisting of two spaced apart semi-circular threaded portions fixedly mounted on the supporting arm and bearing by their outer circular embracing ends against a substantial portion of said collar with an inner compressible portion.

i 2. In an insulator support, the combination with a supporting post having a terminal collar extending laterally beyond the shank portion and a separable endmost abutment for limiting engagement with insulator,

of a two-part threaded arbor bearing against the collar at its outer end and fixedly connected at its inner end with the post and spaced apart by oppositely located clearance slots. 7 r

i In testimony whereof I hereunto affix my signature.

' CARL SEYLER. 

